# Peak Current Calculator, Formula, Peak Current Calculation

## Peak Current Calculator:

Enter the value of root mean square current, Irms(A) to determine the value of Peak current, Ip(A).

 Enter Peak Current: A Result – Root Mean Square: A

## Peak Current Formula:

Peak current is the maximum instantaneous electrical current in a circuit, significantly higher than the average or effective current, especially in AC (Alternating Current) systems.

Peak current is particularly important in the design and testing of circuits that are subject to fluctuating loads or transient events, such as power surges.

In alternating current systems, the peak current is derived from the root mean square (RMS) current value, which is the effective value used for calculating power in an AC circuit.

The RMS value represents the equivalent DC value which delivers the same power to the load as the AC current.

Understanding peak current is essential for protecting components, as many electrical components are sensitive to the maximum current rather than the average.

The formula accounts for the sinusoidal shape of most AC electrical systems where the peak value is a critical factor for design to avoid the risk of component failure due to overcurrent conditions.

Peak current, Ip(A) in amperes is calculated by the product of root mean square current, Irms(A) in amperes and 1.41421.

Peak current, Ip(A) = Irms(A) * 1.41421

Ip(A) = peak current in amperes, A.

Irms(A) = root mean square in amperes, A.

### Peak Current Calculation:

1. Calculate the Peak Current for a circuit with an RMS current of 5 amperes:

Given: Irms(A) = 5A.

Peak current, Ip(A) = Irms(A) * 1.41421

Ip(A) = 5 * 1.41421

Ip(A) = 7.07A.

1. If the peak current in an AC circuit is found to be 14.14 amperes, calculate the RMS current:

Given: Ip(A) = 14.14A.

Peak current, Ip(A) = Irms(A) * 1.41421

Irms(A) = Ip(A) / 1.41421

Irms(A) = 14.14 / 1.41421

Irms(A) = 10A.